Update: Michelle DID know something about this machine! It was made by Eldridge which became National which became what we know as Janome. I guess that means it's a pretty great machine! It is called Montgomery Ward Supreme Reversible Rotary and is from the 40s. If you love reading about vintage sewing machines, go visit Michelle at her blog@
Michelle knows. She is the patron saint of vintage sewing machines. She is handy and her husband has learned how to fix machines. I am trying to convince mine to do the same.